1 # SPDX-License-Identifier: GPL-2.0-only
6 include include/config/auto.conf
7 include $(srctree)/scripts/Kbuild.include
10 include $(srctree)/scripts/Makefile.lib
14 quiet_cmd_cc_o_c = CC $@
15 cmd_cc_o_c = $(CC) $(c_flags) -c -o $@ $<
18 $(call if_changed_dep,cc_o_c)
21 KASAN_SANITIZE_.vmlinux.export.o := n
22 targets += .vmlinux.export.o
23 vmlinux: .vmlinux.export.o
26 ARCH_POSTLINK := $(wildcard $(srctree)/arch/$(SRCARCH)/Makefile.postlink)
28 # Final link of vmlinux with optional arch pass after final link
30 $< "$(LD)" "$(KBUILD_LDFLAGS)" "$(LDFLAGS_vmlinux)"; \
31 $(if $(ARCH_POSTLINK), $(MAKE) -f $(ARCH_POSTLINK) $@, true)
34 vmlinux: scripts/link-vmlinux.sh vmlinux.o $(KBUILD_LDS) FORCE
35 +$(call if_changed_dep,link_vmlinux)
37 # Add FORCE to the prequisites of a target to force it to be always rebuilt.
38 # ---------------------------------------------------------------------------
43 # Read all saved command lines and dependencies for the $(targets) we
44 # may be building above, using $(if_changed{,_dep}). As an
45 # optimization, we don't need to read them if the target does not
46 # exist, we will rebuild anyway in that case.
48 existing-targets := $(wildcard $(sort $(targets)))
50 -include $(foreach f,$(existing-targets),$(dir $(f)).$(notdir $(f)).cmd)